Question: Who is {mentor} of {music by} {The Steel Trap} ?
Paraphrase: Who is {guide} of {music by} {The Steel Trap} ?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q7766452 wdt:P86 ?X . ?X wdt:P1066 ?answer}
Answer: Alexander Glazunov, Ferruccio Busoni, Isabelle Vengerova, Egon Petri, Felix Blumenfeld